Path 1 of 4: Move blink image resources to blink.

Path 1 of 4: Move blink image resources to blink.

This first patch allocates resource ids for the image structures in
blink. It then temporarily renames current usage of all these symbols
from IDR_* to IDR2_* so that we don't conflict on names once we land
part 2.

BUG=467176
Committed: https://crrev.com/e3d696a2fa3861c2cd9a23192248d9107ebd8432
Cr-Commit-Position: refs/heads/master@{#321913}

[Elliot Glaysher, 2015-03-23 21:28:51]

erg@chromium.org changed reviewers:
+ jam@chromium.org

[Elliot Glaysher, 2015-03-23 21:28:51]

This will be a four sided patch, and I'd like to get parts 1 and 2 reviewed
first to make sure I'm on the right track:

Part 1 (chrome): https://codereview.chromium.org/1030743002
Part 2 (blink): https://codereview.chromium.org/1003363006

Part 3 (chrome) will modify the chrome build to use the new scaled resource paks
and will revert the changes of IDR to IDR2 in the content layer, along with
using
these resources in mojo::html_viewer.

Part 4 (blink) will remove the old dead blink_resources.pak file.

[jam, 2015-03-23 23:22:51]

lgtm

[Elliot Glaysher, 2015-03-23 23:23:25]

The CQ bit was checked by erg@chromium.org

[commit-bot: I haz the power, 2015-03-23 23:23:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1030743002/1

[commit-bot: I haz the power, 2015-03-24 00:49:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-24 00:50:03]

Patchset 1 (id:??) landed as
https://crrev.com/e3d696a2fa3861c2cd9a23192248d9107ebd8432
Cr-Commit-Position: refs/heads/master@{#321913}